.upimg-a{
    position: relative;
    display: block;
    float: left;
}
.upimg-shade{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: hsla(0, 0%, 0%, 0.22);
    line-height: 150px;
    color: #ffffff;
    font-size: 18px;
    font-weight: bold;
    display: none;
}
.upimg-a:hover .upimg-shade{
    display: block;
}